Improvement in machines for rolling horseshoe-nail plates or bars



D. FRASER, Jr. Machine for Rolling Horseshoe Nail Plates or Bars.

No. 201651. Paten ted Sept. 3.1878.

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UNITED S'I'A'I'ES PATENT OFFICE.

DANIEL FRASER, JR., OF BOSTON, MASSAOHUSETTS.

IMPROVEMENT IN MACHINES FOR ROLLING HORSESHOE-NAIL PLATES OR BARS.

Specification forming part ofLetters Patent No. 2073651, dated September 3, 1878; application filed December 19, 1877.

To all 'whom it may camera.-

Be it known that I, DANIEL FRASER, Jr., of Boston, in the county of Suft'olk and State of Massachusetts, have invented an Improvement in Machines for Rolling Horseshoe-Nal Plates or Bars, of which the following is a speeification This invention relates to mechanism for rollin g nail plates or bars for the manufacture of horseshoe-nails.

The object of the invention is to produce a long bar of iron, which, when cut at right angles to its length, will enable the production of nails having shanks and heads projecting from one side only, the heads of 'successive nails being cut from opposite ed ges of the nailplate.

The mechanism shown to roll such a plate is conposed of a bed-roll having a horizontal face, and a shaping-roll having a face beveled to reduce the thickness of the bar for the nail-shanks, and to permit the upsetting of the bar at its edges to increase its thickness for the fornation of the heads ot' thenails, these two rollers co-operatin g with grooved upsetti ng-rollers having their axes placed just in advance of the axes of the bed and shaping rolls, to upset the edges-of the iron to form the plate and force the iron into the angles between the cdges of the bed and shapingrolls just as the actin g faces of such rolls catch the iron. This action of the upsetting-rollers fnrnishes sufficient stock for the operation of the bed and shaping rolls, and pernits them to force and carry forward evenly the iron between them, thereby obviating cracking the thicker edges of the nail-plate.

Placing the axes of the upsetting-rollers in ad vance of the axes of the other rollers, as described, prevents the bed and shaping rollers drawing the center of the iron faster than the edge, which injures its molecular formation more than would be the ease were the bar drawn unevenly.

The iron which it is preferred to use for this purpose is that known as homogeneous iron 77 but it is evident that any other suitable iron may be used.

Figure 1 represents in front elevation, partially in section, a sufficient portion of a rolling-nachine to illustrate Iny invention; Fig. 2, a top View thereof, a portion being broken away to show the axis of one of the -upsettin grolls; Fig. 3, a section on linexc,Fig. 1, showing the position of the aXes of the upsettingrolls with relation to the axis of the bed-roll. Fig. 4 represents, in top view and section, the bar of iron before and after it has been acted upon by the rolls; and Fig. 5, a separate View of one of the upsetting-rolls.

In connection with the'nechanisn shown in the drawing, I may use any well-known forn of guide.

The bed-roll a., having a flat face, b, and the shaping-roll c, provided each way from its eenter with two differently inclined or beveled faces, 2 3, the former to shape the shank-forning portion, and the latter to act upon the edges of the bar, are crowded into the openin at the edges of the two rolls c, each held in suitable boxes, supported in the honsings I (I, the boxes preferably being adj ustable.

The upsetting -rollers e c have their axesf located sonewhat in advance of the axis of the best roller as, for instance, as shown in Fig. 3, where the line g g represent the line of the axes of the rollers e, while the line h represents the line of the axis of roller a, roller c con-c sponding with it. This difference of location will be nore or less, according to the thickness of the iron being rolled-the thicker the iron the greater the distance.

These upsetting-rollers c are groovcd, as at 1 the edges of the grooves being beveled, and

the grooves receivin g the edges of the bar just as the bed and shaping rollers bite the bar to carry it between them. These grooves 'i are beveled to bevel the edges of the rolled nailbar, as at 4 5, to avoid the formation of what are known as fins, when such bars are subseqnently run between other sets of finishingrollers.

I claim- The combination, in a rolling-nachine, of abed and a shaping roller with grooved upsetting-rollers having their axes located just in advance of the aXes of the bed and shaping roller, to operate substantially as and for the purpose described.

In testinony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DANIEL FRASER, JR.

NVitnesses G. W. GREGORY, W. J. PRATT. 

